Attachment for internal-combustion motors



F. O. KILGORE.

ATTACHMENT FOR INTERNAL COMBUSTION MOTORS.

APPLICATION FILED JULY 16,1917.

Patented Jan. 17, 1922.

UNITED STATES, PATENT OFFICE.

FREDERICK O. KILGORE, 0F BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE-TENTH TO' JAMES H. CHURCHILL, OE QUINCY, MASSACHUSETTS, AND NINE-TENTHS TO MYRTLE'H. KILGORE, OIE W ATERTOWN, MASSACHUSETTS.

ATTACHMENT FORLINTERNAL-COMBUSTIGN MOTORS.

Specification'of Letters Patent. Patented J an, 1922.

A Application filed July 16 1917. Serial No. 180,851.

To all whom it may concern:

Be-it known that I, FREDERICK O. KIL- oonn, a citizen of the. United States, and a resident of Boston, in the county of Suffolk and State of Massachusetts, have invented an Improvement in Attachments for Internal-Combustion Motors, of which the following description, in connection with the;

accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to devicefor attachment to the intake pipe or manifold of an internal combustion engine or motor, for

reducing the cost of operating and increasing the efliciency of said motor. v

To this end the device is provided with a casing having an air inlet anda separate air outlet, which latter is designed to communi; cate with the manifold of the, motor.

The air inlet has co-operatingwith it a valve which is opened by the suctionof the motor and is closed by a spring located within the casing and capable of being adjusted to hold the valve closed ,againstia' weaksuction and to permit the valveto'be opened by a relatively.strongsuction. p

The device may also be provided witha water inlet port for a purpose as willbe described and which is also controlledby saidvalvea v The-device may further beprovided with a gasolene inlet, which enables the device to be usedfor priming purposes, andmay also be provided with a valve for regulating or adjusting the size of the air inlet port to adjust the device to different sizes-and makes of motors orto positively close the air inlet for testing or other purposes.

These and other features of this invention will be pointed out in the claims at the end of this specification.

Fig. 1 represents a suflicient portion of a motor vehicle provided with a fuel saving and deca'rbonizing device embodying this invention to enable it to be understood.

Fig. 2, a side elevation ofthe device Fig. 4, a detail. in section of the. device with the air valve in its closed positionl Fig. 5, a detail in elevation and section of the casing of the device shown in Fig. 2, and.

V Fig. 6, a section on the line 66, Fig. 3.

In the present instance, I have illustrated the device as attached to the manifold 10 of the internal combustion motor'l2 of an automobile 13. The device referred to, consists essentially of a casing 14, preferably.

cylindrical in shape and providediat one end with an air inlet. port or passage 15 and at one side wlth an air outlet port or opening 16, with which communicates alaterally-ex tended nipple or hollow boss 17 formed on the cas ng let and externally threadedifor connection with the manifold 10.

"The air inlet port or .passagelo terminatesas herein shown, in an enlarged conical seat 20 fora conical valve 21, which is normally seated by a spring 22 jlocatedwithin the casing 14tand encircling a stem or red 24 on said valve,'and a guide-rod 25 provided with a bore 26, into which is extended the stem 24, said spring having onetend bearing against the valve 21 its other end against a-shoulder 27 onsaid guide rod.

The rear end of the guide rod 25 isscrew-r threaded and engaged with internal screw.

threads of a cap'270 for. the rear end of the valve casing, and is extended through the same, for a purpose as will be described.

The air valve 21 is normally: seated by the spring 22 .and is designed tolbe opened by the suction of the motor 12, with which. the air outlet port 16 is in communication at all times.

The casing 1& may and preferably will be Y provided at its air inlet .end with a nozzle or threaded hollow boss 30 with which may be coupled by a nut 31, pipe'32,iwhich is arranged so as to be heated by: the'exliaust pipe 33 of the motor. and which is. herein 7 shown as coiled about said-exhaustpipe (see Fig. 1). The air inl'etnport oripassage 15 may be provided with a 1am e1:'; r.v 1ve;3r having a threaded stem 35,"which engages a threaded opening in the casingl l, and by means of which the air inlet passage 15; may' The apparatus as thus far described, is

be manually closed when desired. 1

capable of} being usedas a gas saver, and

when so used, it co-operates with the car-3 bureter 4.0 of the motor to not only effect-a ing the gasoline used for priming the motor, which spraying device may be of any suitable construction and is shown as a coiled spring 60 closed at its outer end and attached at its inner end to the outlet nipple or boss 17. By means of the manually operated valve 34, the air inlet passage may be closed and the car run with the motor supplied with gas from the earbureter in the usual manner, and after the car has been run in this manner, the valve 84: may be opened more or less so as to bring the automatic air valve 21 into service, and a comparison can thus be made between the running of the car with the gas-saving device out out of service and when out into service.

Furthermore the size of the air passage 15 can be cut down more or less by the valve 34 to suit different kinds or makes of motors. The supply of water to the valve casing 14 may be adjusted by a screw valve 160 in the nozzle 53, or it may be entirely out off in a manner similar to that of the valve 34.

WVhen the ears are provided with a vacuum feeding system for supplying gas to the earbureter, the air suction pipe of such system can be connected with the nipple 53 of the device herein shown if desired.

Claim: v A casing normally open at its rear end and provided at its front end with an air inlet and having between its ends a laterally extended threaded nipple for attachment to the intake pipe of an internal combustion motor, said casing also having a fluid inlet at the rear of said air inlet which is in direct' communication with said threaded nipple through said casing, avalve insertable into and removable from said casing through said open rear end and co-operating with said air inlet to open and close the FREDERICK. O KILGORE. 

